Imagine rotating the flag at right about its pole.

1. Describe the resulting three-dimensional figure. Draw a picture of this figure on your paper.

   Hint (a):

   To help you visualize the 3D figure, refer back to the hint in problem 1-23.

2. Calculate the volume of the rotated flag.

   Hint (b):

   Prism: $V=Bh$;   Cylinder: $V=\pi r^2h$;   Sphere: $V=\frac{4}{3}πr^3$;  Pyramid: $V=\frac{1}{3}Bh$;  Cone: $V=\frac{1}{3}πr^2h$